Cinderella - Bedtime story for little children

Do you know the story of Cinderella? Once upon a time there was a girl. After her mother died, her father got married to a new wife who had to daughters. The wife and the two daughters were very mean; they treated her unfairly and let her do all the dirty jobs in the whole house. One day, a letter of the king arrived, inviting all the pretty girls in the country to come to his castle. This would allow his son to choose the most beautiful girl of the country to get married with. Cinderella wanted to go, too,